Hanging off that tower are a bunch of Ubiquiti radios, but four of them are setup to provide redundant connections to two offices. They connect to two different towers. They are running their own little internal STP. All it does is basically shut down one of the radios....

But in this case the Cisco switch appears to be seeing them advertising themselves as root bridges and is blocking the trunk port VLAN.

Any suggestions? Can I raise or lower the bridge cost on the Ubiquiti radios?

Re: STP on Ubiquiti Radios

I'm sorry I don't have your answer, but I would like to post a comment.I have noticed on a number of occasions certain Cisco switches would block the port on a non-redundant UBNT link back to another Cisco switch. The first time was a 2950 back to a 500 series, and several times a 2950 linked to 2960's. We fixed the first time by replacing the 500 series. A couple of times it was a mystery what was actually happening but we replaced the 2950 with a 2960 and it was ok. The last time, the ports on both sides were set to auto trunk but they would not do it, the 2960 would instead block the port and this was not a redundant link. My answer there was to manually set up trunking on the ports and then they were happy.On redundant links I just plug both into the Cisco switches and let the switches handle it.I am curious how your little internal STP is setup.

Hanging off that tower are a bunch of Ubiquiti radios, but four of them are setup to provide redundant connections to two offices. They connect to two different towers. They are running their own little internal STP. All it does is basically shut down one of the radios....

But in this case the Cisco switch appears to be seeing them advertising themselves as root bridges and is blocking the trunk port VLAN.

Any suggestions? Can I raise or lower the bridge cost on the Ubiquiti radios?

Matt, the way that might work for you the best is to have STP setup on your routers/switches, and turn STP on the ubiquiti devices off. Their STP support is limited.

This might help with your root bridge problem. Good luck, and post your results.